SAN ANTONIO -- Boston Celtics reserves Jermaine O'Neal and Von Wafer both participated fully in the team's lengthy offday practice session Wednesday at the AT&T Center, according to the team.

O'Neal, sidelined since Jan. 12 due to left knee surgery, engaged in his first practice session since rejoining the team Monday in Indianapolis and suggested that he'll be back on the floor Thursday night against the Spurs.

“I’m going to play tomorrow," O'Neal said, according to the Boston Globe. "We talked a little bit about me playing back-to-back games. Obviously, it’s sensitive, but I told them the plan is to play back-to-back games, the plan is to play as many minutes as I can without limitation.”

The final hurdle for O'Neal would be making sure his knee doesn't swell from the activity Wednesday. The Celtics can gauge that at Thursday's morning shootaround, then confidently trot him out there against San Antonio.

Wafer has been sidelined since March 4 with a right calf sprain. He participated in a practice last week, but downshifted after that. Rivers has previously suggested his return is still a ways off.